HomeCompare fishDwarf rainbowfish vs Garnet tetra Dwarf rainbowfish vs Garnet tetra: can they live together? Verdict: With cautionTheir preferred pH ranges don't overlap.Both are comfortable at 23–27°C (73–81°F).Minimum tank for the pair: 150 L (40 US gal)Side by sideDwarf rainbowfishGarnet tetraAdult size5 cm (2 in)5 cm (2 in)Minimum tank150 L (40 US gal)55 L (15 US gal)Temperature22–28°C (72–82°F)23–27°C (73–81°F)pH6.5–7.55.0–6.0Hardness8–18 dGH (143–321 ppm)5–12 dGH (89–214 ppm)TemperamentPeacefulPeacefulCommunity tankGoodExcellentCare levelEasy–DietOmnivoreOmnivoreSpecies profilesDwarf rainbowfishMelanotaenia praecoxGarnet tetraHemigrammus pulcher